private static void CompareIndexDesc(TableLookupKeyDesc expected, TableLookupKeyDesc actual)
{
Assert.AreEqual(expected.Hashes.Count, actual.Hashes.Count);
for (var i = 0; i < expected.Hashes.Count; i++)
{
CompareIndexDescHash(expected.Hashes[i], actual.Hashes[i]);
}
Assert.AreEqual(expected.Ranges.Count, actual.Ranges.Count);
for (var i = 0; i < expected.Ranges.Count; i++)
{
CompareIndexDescRange(expected.Ranges[i], actual.Ranges[i]);
}
}
public JoinExecTableLookupStrategy GetJoinLookupStrategy(
String accessedByStmtName,
int accessedByStmtId,
Attribute[] accessedByStmtAnnotations,
EventTable[] eventTables,
TableLookupKeyDesc keyDescriptor,
int lookupStreamNum)
{
var noopTable = (VirtualDWEventTable)eventTables[0];
for (var i = 0; i < noopTable.HashAccess.Count; i++)
{
var hashKey = keyDescriptor.Hashes[i];
noopTable.HashAccess[i].LookupValueType = hashKey.KeyExpr.ExprEvaluator.ReturnType;
}
for (var i = 0; i < noopTable.BtreeAccess.Count; i++)
{
var range = keyDescriptor.Ranges[i];
var op = range.RangeType.GetStringOp().FromOpString();
var rangeField = noopTable.BtreeAccess[i];
rangeField.Operator = op;
if (range is QueryGraphValueEntryRangeRelOp)
{
rangeField.LookupValueType =
((QueryGraphValueEntryRangeRelOp)range).Expression.ExprEvaluator.ReturnType;
}
else
{
rangeField.LookupValueType =
((QueryGraphValueEntryRangeIn)range).ExprStart.ExprEvaluator.ReturnType;
}
}
var index =
_dataExternal.GetLookup(
new VirtualDataWindowLookupContext(
accessedByStmtName, accessedByStmtId, accessedByStmtAnnotations, false, _namedWindowName,
noopTable.HashAccess, noopTable.BtreeAccess));
CheckIndex(index);
return(new JoinExecTableLookupStrategyVirtualDW(_namedWindowName, index, keyDescriptor, lookupStreamNum));
}
public JoinExecTableLookupStrategyVirtualDW(String namedWindowName, VirtualDataWindowLookup externalIndex, TableLookupKeyDesc keyDescriptor, int lookupStream)
{
_namedWindowName = namedWindowName;
_externalIndex = externalIndex;
_evaluators = new ExternalEvaluator[keyDescriptor.Hashes.Count + keyDescriptor.Ranges.Count];
_eventsPerStream = new EventBean[lookupStream + 1];
_lookupStream = lookupStream;
var count = 0;
foreach (var hashKey in keyDescriptor.Hashes)
{
var evaluator = hashKey.KeyExpr.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
count++;
}
foreach (var rangeKey in keyDescriptor.Ranges)
{
if (rangeKey.RangeType.IsRange())
{
var range = (QueryGraphValueEntryRangeIn)rangeKey;
var evaluatorStart = range.ExprStart.ExprEvaluator;
var evaluatorEnd = range.ExprEnd.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorBtreeRange(evaluatorStart, evaluatorEnd);
}
else
{
var relOp = (QueryGraphValueEntryRangeRelOp)rangeKey;
var evaluator = relOp.Expression.ExprEvaluator;
_evaluators[count] = new ExternalEvaluatorHashRelOp(evaluator);
}
count++;
}
}
